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https://issues.apache.org/jira/browse/CASSANDRA-8275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14295840#comment-14295840
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Benjamin Lerer commented on CASSANDRA-8275:
-------------------------------------------
While working on this problem I discovered that there was 2 issues with
multicolumn restrictions and secondary indices:
# The first problem was caused by the fact that the code was not retrieving the
proper value for the clustering column {{IndexExpression}} when multicolumn
restrictions were being used. This problem could be reproduced by the unit test
provided in the description
# The second problem was that for the table:
{code}CREATE TABLE test (a int, b int, c int, d int, e int, f int, PRIMARY KEY
((a, b), c, d, e)){code}
the following query:
{code}SELECT * FROM test WHERE a = ? AND (c) IN ((?), (?)) AND f = ? ALLOW
FILTERING{code}
was working fine if the clustering column {{c}} was not indexed but was
rejected if it was.
The reason was that the code was trying to create an {{IndexExpression}} for
the {{c}} column which was not needed.
This problem was also affecting single column restrictions.
> Some queries with multicolumn relation do not behave properly when secondary
> index is used
> ------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-8275
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8275
> Project: Cassandra
> Issue Type: Bug
> Reporter: Benjamin Lerer
> Assignee: Benjamin Lerer
> Fix For: 3.0, 2.1.3, 2.0.13
>
> Attachments: CASSANDRA-8275-2.0.txt, CASSANDRA-8275-2.1.txt,
> CASSANDRA-8275-trunk.txt
>
>
> In the case where we perform a select using a multicolumn relation over
> multiple columns that use a secondary index the error message returned is
> wrong.
> The following unit test can be use to reproduce the problem:
> {code}
> @Test
> public void testMultipleClusteringWithIndex() throws Throwable
> {
> createTable("CREATE TABLE %s (a int, b int, c int, d int, PRIMARY KEY
> (a, b, c, d))");
> createIndex("CREATE INDEX ON %s (b)");
>
> execute("INSERT INTO %s (a, b, c, d) VALUES (?, ?, ?, ?)", 0, 0, 0,
> 0);
> execute("INSERT INTO %s (a, b, c, d) VALUES (?, ?, ?, ?)", 0, 0, 1,
> 0);
> execute("INSERT INTO %s (a, b, c, d) VALUES (?, ?, ?, ?)", 0, 0, 1,
> 1);
> execute("INSERT INTO %s (a, b, c, d) VALUES (?, ?, ?, ?)", 0, 1, 0,
> 0);
> execute("INSERT INTO %s (a, b, c, d) VALUES (?, ?, ?, ?)", 0, 1, 1,
> 0);
> execute("INSERT INTO %s (a, b, c, d) VALUES (?, ?, ?, ?)", 0, 1, 1,
> 1);
> assertRows(execute("SELECT * FROM %s WHERE (b) = (?)", 1),
> row(0, 1, 0, 0),
> row(0, 1, 1, 0),
> row(0, 1, 1, 1)
> );
>
> assertRows(execute("SELECT * FROM %s WHERE (b, c) = (?, ?) ALLOW
> FILTERING", 1, 1),
> row(0, 1, 1, 0),
> row(0, 1, 1, 1)
> );
> }
> {code}
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